A336237 - cp's OEIS frontend

A336237 Numbers of the form ab such that phi(ab) = a*b where ab is the concatenation of a and b.

n	a(n)
1	24
2	26
3	87
4	154
5	165
6	209
7	250
8	364
9	440
10	448
11	644
12	875
13	1240
14	1252
15	1269
16	1320
17	1434
18	1632
19	1640
20	1768
21	1996
22	2440
23	2480
24	2500
25	2656
26	2840
27	2842
28	4040
29	4400
30	5240
31	6040
32	6499
33	6544
34	7240
35	7640
36	8250
37	8360
38	8420
39	8440
40	8727
41	8832
42	8875
43	9640
44	10040
45	10344
46	10840

[24, 26, 87, 154, 165, 209, 250, 364, 440, 448, 644, 875, 1240, 1252, 1269, 1320, 1434, 1632, 1640, 1768, 1996, 2440, 2480, 2500, 2656, 2840, 2842, 4040, 4400, 5240, 6040, 6499, 6544, 7240, 7640, 8250, 8360, 8420, 8440, 8727, 8832, 8875, 9640, 10040, 10344, 10840]

cp's OEIS Frontend

A336237 Numbers of the form ab such that phi(ab) = a*b where ab is the concatenation of a and b.

Table of values

List of values